Finding the Fourth Proportional to 2,108.56, 2,909.78 and 1,151.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.56 : 2,909.78 = 1,151.46 : x
2. Step 2: Convert to fraction form
   2,108.56/2,909.78 = 1,151.46/x
3. Step 3: Cross multiply
   2,108.56x = 2,909.78 × 1,151.46
4. Step 4: Simplify right side
   2,108.56x = 3,350,495.28
5. Step 5: Solve for x
   x = 3,350,495.28/2,108.56
6. Step 6: Final answer
   x = 1,589.00